Career
Graham is an indigenous Australian from near Portuguese Lincoln in South Australia. In 2003, Johncock scored the most goals for the Adelaide Crows with 30. He had spent most of these games in defence, but was occasionally pushed forward.
He missed a large chunk of the season, but returned before the finals and played a couple of games.
He was hampered in the finals, however, by a leg injury. In recent years, Johncock has been playing mainly as a defender, teaming with fellow indigenous player Andrew McLeod in running the ball out of defence.
This was enough that he was named as a back pocket for the Dream Team in their clash with Victoria during 2008. Johncock did make a brief return to the forward line late that same season, as Adelaide desperately searched for someone to replace a host of injured forwards.
Johncock is known to support the local Aboriginal communities.
lieutenant had been rumoured that he wanted a change of team for 2009, but after the 2008 American Federation of Labor-Congress Draft he confirmed he wanted to stay at Adelaide. Johncock played his 200th American Federation of Labor-Congress game in 2011, but Adelaide were humiliated by Street Kilda to the tune of 103 points. Playing on Stephen Milne, Johncock had eight goals kicked against him.
Johncock retired on the 1st of July, 2013, saying his body could no longer withstand the rigours of American Federation of Labor-Congress. Though, he has expressed interest in playing out season 2013 with the Portuguese Adelaide Magpies in the SANFL.